Billy Sure, inventor and CEO of Sure Things, Inc., is in a race to finish his invisibility spray before another inventor gets all the glory in the eighth book of a hilarious middle grade series!

Everyone is talking about Billy Sure, the boy genius and millionaire inventor whose inventions have become instant hits. From the All Ball that turns into any sports ball to his hovercraft, Sure Things, Inc. can do no wrong! Now Billy wants to help other kids achieve their inventing dreams, so he solicits and selects new ideas to develop.

Billy has been working on an invisibility invention for yearsbut it isnt quite right yet. Now suddenly theres a new inventor on the scene who claims to have developed it first. But it might not be all its cracked up to be. Will Billys dream of creating the worlds first invisibility spray disappear?

Find out in this wacky story with funny black-and-white illustrations throughout.